Question

The 7 dwarves only have 4 beds, so 3 dwarves sleep on the floor. How many different ways can 4 dwarves be chosen to sleep on the beds?

A.
7
B.
42
C.
70
D.
35

Answer 1

Answer is 35. Basic probability. Non-Distinguishable items. 7pick4. 7*6*5*4/4! = 35.

Answer 2

c 70 chosen to sleep on the bed